Another sign that you may be due for a serpentine belt replacement is engine overheating. That's because, in many cars, one of the accessories powered by the drive belt is your car's water pump.
It's also worth noting that your serpentine belt may fail before it's time for a replacement. There are several signs that your engine's serpentine belt needs to be replaced, and it's a good idea ...
Reinforced rubber drive belts allow the engine’s rotating crankshaft to drive components such as water pumps, alternators, air-conditioning compressors, power-steering pumps or superchargers.